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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 752 · 40 questions
TalentJR

The method (Divide by the HCF): Find the HCF (highest common factor) of the top and the bottom. Divide the top and the bottom by the HCF. If the HCF is 1, the fraction is already in its simplest form.

NameDateTime takenScore ___ / 40
  1. 1.What is the HCF of 30 and 42?
  2. 2.What is the HCF of 45 and 50?
  3. 3.Is 7/10 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 12 and 18?
  5. 5.Write 32/36 in its simplest form. =
  6. 6.Is 12/15 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 7 and 42?
  8. 8.Is 16/18 in its simplest form? (a) No (b) Yes
  9. 9.Is 2/5 in its simplest form? (a) No (b) Yes
  10. 10.Is 27/30 in its simplest form? (a) No (b) Yes
  11. 11.Write 18/20 in its simplest form. =
  12. 12.What is the HCF of 3 and 30?
  13. 13.What is the HCF of 7 and 56?
  14. 14.What is the HCF of 40 and 45?
  15. 15.Write 40/72 in its simplest form. =
  16. 16.What is the HCF of 9 and 90?
  17. 17.Write 5/20 in its simplest form. =
  18. 18.What is the HCF of 2 and 12?
  19. 19.What is the HCF of 18 and 60?
  20. 20.Write 18/24 in its simplest form. =
  21. 21.Is 1/5 in its simplest form? (a) No (b) Yes
  22. 22.Write 28/32 in its simplest form. =
  23. 23.Is 4/14 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 6 and 42?
  25. 25.What is the HCF of 8 and 48?
  26. 26.Write 12/28 in its simplest form. =
  27. 27.What is the HCF of 21 and 27?
  28. 28.Write 15/21 in its simplest form. =
  29. 29.Is 7/9 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 3 and 15?
  31. 31.What is the HCF of 5 and 15?
  32. 32.Write 6/48 in its simplest form. =
  33. 33.Is 40/45 in its simplest form? (a) No (b) Yes
  34. 34.Write 56/64 in its simplest form. =
  35. 35.Write 40/45 in its simplest form. =
  36. 36.Write 54/63 in its simplest form. =
  37. 37.What is the HCF of 12 and 14?
  38. 38.Write 2/14 in its simplest form. =
  39. 39.What is the HCF of 7 and 63?
  40. 40.Is 15/20 in its simplest form? (a) No (b) Yes

Answer key

  1. 6
  2. 5
  3. Yes
  4. 6
  5. 8/9
  6. No
  7. 7
  8. No
  9. Yes
  10. No
  11. 9/10
  12. 3
  13. 7
  14. 5
  15. 5/9
  16. 9
  17. 1/4
  18. 2
  19. 6
  20. 3/4
  21. Yes
  22. 7/8
  23. No
  24. 6
  25. 8
  26. 3/7
  27. 3
  28. 5/7
  29. Yes
  30. 3
  31. 5
  32. 1/8
  33. No
  34. 7/8
  35. 8/9
  36. 6/7
  37. 2
  38. 1/7
  39. 7
  40. No

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